tree: https://git.kernel.org/pub/scm/virt/kvm/kvm.git queue head: c6d517aecd40b25ea05c593962b2c4b085092343 commit: 9140e381e0f2f8cb1c628c29730ece2a52cb4cbc [11/44] x86/kvm: Teardown PV features on boot CPU as well config: x86_64-randconfig-a001-20210506 (attached as .config) compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 8f5a2a5836cc8e4c1def2bdeb022e7b496623439) reproduce (this is a W=1 build): wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # https://git.kernel.org/pub/scm/virt/kvm/kvm.git/commit/?id=9140e381e0f2f8cb1c628c29730ece2a52cb4cbc git remote add kvm https://git.kernel.org/pub/scm/virt/kvm/kvm.git git fetch --no-tags kvm queue git checkout 9140e381e0f2f8cb1c628c29730ece2a52cb4cbc # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): >> arch/x86/kernel/kvm.c:672:2: error: implicit declaration of function 'kvm_guest_cpu_offline' [-Werror,-Wimplicit-function-declaration] kvm_guest_cpu_offline(); ^ arch/x86/kernel/kvm.c:672:2: note: did you mean 'kvm_guest_cpu_init'? arch/x86/kernel/kvm.c:332:13: note: 'kvm_guest_cpu_init' declared here static void kvm_guest_cpu_init(void) ^ >> arch/x86/kernel/kvm.c:679:2: error: implicit declaration of function 'kvm_cpu_online' [-Werror,-Wimplicit-function-declaration] kvm_cpu_online(raw_smp_processor_id()); ^ 2 errors generated. vim +/kvm_guest_cpu_offline +672 arch/x86/kernel/kvm.c 669 670 static int kvm_suspend(void) 671 { > 672 kvm_guest_cpu_offline(); 673 674 return 0; 675 } 676 677 static void kvm_resume(void) 678 { > 679 kvm_cpu_online(raw_smp_processor_id()); 680 } 681 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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